Sania was rummaging her drawer, when she found some old movie tickets. With a smile, she remembered seeing the famous cartoon movie, which the adults had also enjoyed. It was a weekday, so the movie theatre was not completely full. Some adults and mostly children were at the theatre. That day, the ratio of the number of adults to children was 3:5.  Each person had a seat in the Balcony or had a seat in the Stalls.  2 ⁄15 of the children had seats in the Stalls.  468 children had seats in the Balcony.  There were exactly 1200 seats in the theatre.

How many children had come to watch the movie? a) 324 b) 540 c) 432 d) 243